package com.itheima.reggie.config;

import com.itheima.reggie.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

/**
 * @author mff
 * @date 2022/6/4 23:33
 * @mood happy
 */
@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {

//    做静态资源映射使用，告诉浏览器我们在地址栏输入的访问路径
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
//       资源映射器
        log.info("开始静态资源映射");
        registry.addResourceHandler("backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("front/**").addResourceLocations("classpath:/front/");
    }

    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters)
    {
        log.info("扩展消息转换器...");
//创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new
                MappingJackson2HttpMessageConverter();
//设置对象转换器，底层使用Jackson将Java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
//将上面的消息转换器对象追加到mvc框架的转换器集合中
        converters.add(0,messageConverter);
    }
}
